Would plankton be found in the bathypelagic zone?

Yes, plankton can be found in the bathypelagic zone, although their abundance is significantly lower than in shallower layers. This deep ocean zone, which extends from about 1,000 to 4,000 meters, is home to organisms that have adapted to the darkness and high pressure, including certain species of zooplankton. While phytoplankton are primarily found in sunlit surface waters, some types of plankton can descend into deeper waters, contributing to the food web in this zone.